Air quality index [µg/m3]:
excellent ≤ 12
good ≤ 36
lightly polluted ≤ 60
moderately polluted ≤ 84
heavily polluted ≤ 120
severely polluted > 120
PM 2.5
[µg/m3]
PM 10
HOUR OPOLSKA ST. ROOF (BEFORE FILTERS)  AIR SUPPLIED TO OFFICES
230059lightly pollutedexcellent61excellent
220053lightly pollutedexcellent81excellent
210046lightly pollutedexcellent61excellent
200033goodexcellent41excellent
190018goodexcellent21excellent
180013goodexcellent21excellent
17008excellentexcellent11excellent
16007excellentexcellent11excellent
150010excellentexcellent21excellent
140015goodexcellent21excellent
13009excellentexcellent11excellent
12005excellentexcellent11excellent
11007excellentexcellent11excellent
100013goodexcellent31excellent
090028goodexcellent51excellent
080033goodexcellent81excellent
070031goodexcellent61excellent
060027goodexcellent41excellent
050026goodexcellent51excellent
040029goodexcellent41excellent
030018goodexcellent21excellent
020014goodexcellent21excellent
010014goodexcellent31excellent
000015goodexcellent31excellent